021 ▲ 6407 ▲ 3980) № official ╬ by ╬ Σ right side ▲ "Little Swan dryer Shanghai service center" ▲ sales professionals ╬ Σ ╬ repair after 
 Innovation - have been engaged in research and development of audio-visual products, household appliances and maintenance of after-sales services. "Innovation, excellence" business philosophy. Believe [the quality from professional], focusing on Shanghai dryer maintenance. After years of development, has become faster high-tech professional dryer repair, maintenance, recycling one-stop service of diversified businesses. Shanghai Maintenance Telephone: 
 Shanghai Swan dryer maintenance of telephone service centers dryer Little Swan 
 Little Swan products and services policies dryer 
 1) Service Commitment: 
 1. To enjoy their purchase of Little Swan know the dryer product configuration, three bags of commitment, service center right of the real situation. 
 2. Enjoy the clothes dryer on the Little Swan products and services supervision. 
 3. The right to choose duty dryer Little Swan Company Limited (hereinafter referred to as "Little Swan Dryer Company") approved maintenance organizations get any service. 
 4. Actively cooperate with the dealer experience in machine work well. 
 5. With the dealer, the correct form of "user a single receipt." 
 6. The warranty period, take good care of the "User Manual", and three bags of evidence. 
 7. Back machine, the machine should be complete with the original packing materials to ensure complete attachment items. If the attachment is lost or abandoned goods, packaging materials, to be deducted in the refund the cost of machine. Machine should be returned back to the original warranty card. 
 Small home appliances services policy White Swan 
 Service Policy 
 First, the service aims 
 Provide the best service, to create first-class brand 
 Second, service requirements 
 Central city services in place within 24 hours, reservation services in remote areas. 
 Third, the warranty policy 
 Little Swan white appliances machine warranty for one year (the execution time of notification under the Party's specific time), the main components of three years 
 Symptom: audio-visual normal and no characters. 
 Analysis of maintenance: According to the analysis of failure phenomenon, failure to be out of character formation in the circuit. 
 Machine microprocessor LC86F3320-5R78 (N801), no peripheral characters LC oscillator 
 Oscillator, the character of the oscillation signal oscillation circuit required by the N801 ⑩, ⑩ external crystal pins 
 Zhen-X801 (32kHz) frequency are derived from Figure 8. If the X801 and the connected 
 RC element anomalies, often cause no boot or boot remote control and keying abnormal failure. 
 Guangzhou Bosch dryer repair, therefore, rule out the N801 ⑩, ⑩ feet inside and outside the circuit may be abnormal, turn to check the N801 
 Horizontal and vertical flyback pulse transmission circuit. First check the line flyback pulse, due to the image and color 
 Were normal, ie, small signal processing block LA76810 ③ foot line flyback pulse normal, focused review 
 Check R822, V804 and other components. Observed that 'R822 is open, renewals Troubleshooting 
 Shanghai Shanghai Little Swan Little Swan dryer repair dryer repair